but like the LiveJournals, but this time it's official

Social media has come a long way since then. Now, the Phoenix lander has its own Twitter account, written in the first person, but like the LiveJournals, but this time it's official. Playing the part of Phoenix is Veronica McGregor, the media director of NASA's Jet Propulsion Laboratory.
-- Mars probe updates earthlings with Twitter on cbc.ca, Thursday June 5 2008

Deleting the first but would be the best solution.